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Learning Outcomes – Interventional Studies (Study Designs)

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Scientific studies in the medical field are done in order to come up with a solution to a particular health problem based on data that is collected during the studies. Data is collected with a very high degree of accuracy and in an authenticated manner. Scientific studies are planned according to evidence which is currently available. This evidence is used to find the solution for unclear problems or the shadow areas in medicine. This remains the overall aim of most studies with a few exceptions.

00:01
What have you learned from this lecture? Wellyou now know the definition of an experiment,
if you recall, an experiment is when you,the investigator manipulates a variable in
the study. You now know the purpose of blindingand randomization. Randomization is about
controlling for extraneous variables that,as a result, improve our internal validity.
You now know the characteristics of the differentkinds of experiments, the RCT, randomized
controlled trial, the quasi-experimental designand the natural experiment, as well as this
thing that I've called the ecological study,which isn't strictly an experiment, but we
tend to talk about it with experiments. Andyou also understand the nature of Hawthorne
and Rosenthal effects, which are kinds ofbiases we encounter a lot in RCTs and which
are the reason that we prefer blinded studies.
00:47
Thank you.

About the Lecture

The lecture Learning Outcomes – Interventional Studies (Study Designs) by Raywat Deonandan, PhD is from the course Types of Studies.

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